Water heater



June 16, 1931. c. G. CARLSON WATER HEATER Original Filed Jan. 30, 1926 x 1; *Q

I/YVENTOF.

Cfc/L G. 6716150.

jaw/0%@ l Patented .lunev l6,` 1931 ALTE' 'a A'rEVNlT orifice WATER HEATER Substitute `for application Serial No. 84,960,y filed.y January 3Q, 1926. This application filedIDeoember `22, 'Y

1930. Serial No. S04-,184. i i

This invention relates to a hotfwater heater or boiler, and while the invention is applicable to any type of such a heater or boiler, it

particularly is designed for use in a domestic furnaceor hot water heater.

It is an object of this invention to providel a simple and efficient construction of rwater heater or boiler in which the water containing 1t is a further objectvof the invention to provide a simple and efcient construction of v water heater or boiler having the water con created whereby said gases pass centrally' taining parts eectively disposed in contact with the heating gases which is particularly designed to be easily and inexpensively made, largely .from sheet metal.

It is still another ob] ect of theinvention to providea water heater or boiler comprising van outer casing, an inner casing spaced therefrom at the sides and top, said inner casing having conduits of comparatively great width extending therethrough, from side to ner ends spaced at the centralportionof the boiler, said casings thus forming ak water space therebetween and said conduits and chambers also forming awater space communicating with the first mentioned water space, a passage for the ilue gases being thus upward between the inner ends of said chambers and into direct contact'with` the undersides of said conduits, r1`hese and other objects and advantages of 'the invention will be fully set forth in the following description made in connection with the accompanying drawings in which like characters refer tothe same parts throughout the different views, and in which,

Fig. 1 is a central vertical section taken through the furnace substantially on the line 1-1 of Fig. 2, as indicated by the arrows;

`the boiler, as seen from the bottom of Fig. 2.

casing 9. AsV shown in Figs. 2 and', the Si Referring to the drawingaa` water heater ory boiler is shown comprising an outer casing 5 which will be supported and suitablyconnected to a base plate 6. The casing 5 has a plurality of pipes or conduits 7 extendingy 55" therethrough at its upper end for a purpose to be lTater described, and also has a plurality ofpipes or 'conduits 8 extending thereiiito in its lower portion for a purpose to be later y described.-r An inner casing 9 is provided 50' which is spaced from the vcasing `5 at its sides `and top. While the c'asings" 5 and 9 may be of various shapes, in` the embodiment of the invention illustrated, they are shown' alsof cylindricalf65" shape. kThe casing 9 is flanged outwardfat" its lower end andsuitably connected to the inner side of casing 5 in any suitable manner, as by' the rivets shown.v The casing 9" has a plurality of comparatively wide and 70' flat conduits V10 extending` therethrough from side to side and disposed substantially centrally transversely of casing 9. will be noted that the conduits 10 havetlreir great-v est vertical dimension at their central po`r- 75h tions tapering in vertical dimension toward each side from said central portion. The conduits 10 have open ends communicating. with the space between casings 5 and9.' The casing 9 also has inwardly extending cham- 50" bers 9a extending thereinto from vopposite A sides thereof, said chambers extendiiigtransversely of the conduits '.10 and having their inner endsspaced atthe central' portion of chambers 9a entend inwardly'from the sides which arespaced ninety'degrees fromthe sides ofcasing 9 from which the conduits` lOeXtend..y Casing 9fhas a centralcon'duit 9b leading from its upperend through` a suitable opening in the top of lcasing'5,1a water-tight joint, of course, Vbeingjmad'e',ben tweencasing 5 andconduit 92p The 'casing's' 5.l aiidf9, at one side thereof,'have substan` tially rectangular casings llfpassing there# g throughto'the" inner side of casing 9, said casingfprojecting somewhat 1 outwardly of casingj and Aprefe'irably being" connected thereto by angle frames 12'. Salidcasings are closed attheir outer ends 'by' doors 13 suit# me ably hinged about pintles 14 disposed in hinges carried by said doors and casings. The doors 13, preferably also are equipped with handles 14. The casing 5 has a ring or casting 15 of angular shape in cross section, secured below the lower end of casing 9, which ring is suitably rabbeted to receive and support the grate 16, which preferably will be made of spaced bars. Below the member 15, the casing 5 is also provided with another inwardly extending rectangular casing 17 surrounded by the angular frame 18, which casing is also provided at its outer end with a hinged door 19.

1n operation, it will be understood that the grate 16 comprises a burner for solid fuel, such as wood or coal. The conduits 8 will form water inlets for the water chambers of the furnace and will be connected to some suitable and regulated source of water sup*- ply. The conduits 7 will form the water or steam outlet means and will be suitably connected to radiators, or other heating members. Vsater being supplied to the furnace and the necessary fuel supplied, the and hot products or gases of combustion will pass upwardly between chambers 9a and around conduits 10 in the path indicated by the arrows in Fig. 1, said gases passing out of pipe 9b which will be suitably connected to a chimney. As shown in Fig. 1 and indicated by the arrows in Fig. 2,` the water will circulate in the conduits 10 and chambers 9a. It will be seen that as theA hot gases pass upwardly they must pass around the chambers 9a and in passing upwardly centrally therebetween will be brought into effective conu tact with the lower surfaces of the conduits 10 and with the lower surfaces of succeeding chambers 9a. A very eective heating effect is thus produced. The lower door 13 constitutes a fuel door and the upper doors 15 constitute cleanout doors giving access to the interior of casing 9 so that the surface of chambers 9a and conduits 10 may be cleaned. The lower door 19 constitutes an ash door and the space beneath grate 16 consitutes the ash pit. 1t will, of course, be apparent that oil or any other fuel may also be used in the furnace. The walls of casings 5 and 9 and of conduits 10 and f chambers 9a can conveniently be made of sheet metal. rIhe structure of the furnace is thus quite simple and the furnace may be easily and inexpensively made.

It will, of course, be understood, that various changes may be made in the form, details, proportions and arrangements of the parts without departing from the scope of applicants invention, which, generally stated, consists in the device capable of carrying out the. objects above set forth, in the novel parts and combinations of parts disclosed and defined in the appended claims.

Cross reference is hereby made to my previous application for United States patent on this same invention, filed January 30, 1926, Serial Number 84,960, and entitled lVa-ter heater, formally allowed February 23, 1929, forfeited for failure to pay the final government fee thereon and not renewed.

Vhat is claimed is 1. A water heater having in combination, an outer casing, an inner casing spaced therefrom, whereby a water chamber is formed between said casings, spaced comparatively wide flat conduits of less Width than said inner casing extending horizontally and centrally therethrough and communicating at their ends with said water chamber, pairs of opposed spaced flat conduits extending inwardly from the sides of said inner casing having closed inner ends terminating short of the center of said inner casing providing a space between said closed inner ends, said last mentioned conduits communicating with said water chamber at their outer ends and disposed respectively between said first mentioned conduits so that said iirst mentioned and said pairs of last mentioned conduits extend in said inner casing at alternately different levels upwardly, said first mentioned conduits being so disposed as to bridge the Y space between said pairs of opposed conduit-s throughout their extent, a fuel burner adjacent the bottoni of, said inner casing, and an outlet conduit at the top of said casing communicating with said inner casing whereby a circuitous passage is formed for the projects of combustiton between the ends of said last mentioned conduits and around the sides of said first mentioned conduits.

2. rlhe structure set forth in claim 1, said last mentioned conduits having straight inner ends and having the central portions of their outer ends spaced 90 from the central portions of said first mentioned conduits.

3.- The structure set forth in claim 1, said last mentioned conduits having their open outer ends extending almost 180O around said inner casing, whereby a narrow substantially rectangular space is formed between their' inner closed ends.

In testimony whereof I afx my signature.

CEGIL G. CARLSON. 

